2x+x+3+x=75

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Solution for 2x+x+3+x=75 equation: 



2x+x+3+x=75

We move all terms to the left:

2x+x+3+x-(75)=0

We add all the numbers together, and all the variables

4x-72=0

We move all terms containing x to the left, all other terms to the right

4x=72

x=72/4

x=18

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